Joseph hauss



' (No Model.)

J. H-AUSS. .SGHOOL DESK AND SEAT.

' v o. 506,496. Patent ed Oct. 10,1893.

WITNESSES:

" UNITED STATES PATENT OFFI E.

JOSEPH HAUSS, OF FRANKENTHAL, GERMANY.

SCHOOL DESK AND SEAT.

SPECIFICATION forming part of Letters Patent No. 506,496, dated October 10, 1893. Application filed December 30, 1892-. Serial No. 456.751. (No model.)

To all whom it may concern.- Be it known that l, JOSEPH HAUss, a subject of the Emperor of Germany, residing at Frankenthal, Rheinpt'alz, Germany, have invented a new and useful Improvement in School Desks and Seats, which improvement is fully set fortlrin the following specification and accompanying drawings.

My invention relates to improvements in school desks and seats, and consists of the combination of parts hereinafter set forth.

Figure 1 represents a side elevation of a school seat embodying my invention. Fig. 2 represents a side elevation of a school desk embodying my invention. Fig. 3 represents a vertical section on line 00, cc, Fig. 2. Fig. 4 represents a horizontal section on line y, y, Fig. 1. Fig. 5 represents a horizontal section on line 2:, 2, Fig. 2. Fig. 6 represents a side elevation of portion of the seat, on an enlarged scale. Fig. 7 represents an elevation in partial section.

Similar letters of reference indicate corresponding parts in the several figures.

Referring to the drawings: A designates standards which are secured to the base or floor B. To the inner sides of said standards are fitted the depending legs 0 of the desk D.

Passing through slots in the standards A and openingsin the legs 0, are bolts E, whose threaded ends have fitted on them the nuts G, the latter occupying the sockets F on the innor sides of the legs 0, whereby said nuts are shielded from accidental contact and prevented from rotation.

On the walls of the slots of the standards A are flanges H, whose faces are corrugated or serrated as at J, to receive the teeth K on the sides of the bolts E, it being seen that the bolts may be drawnso that the teeth may be disengaged from the corrugations or serrations J, after which the legs '0 may be raised or lowered to adjust the height of :the desk D. The teeth are then fitted in the contiguous corrugations or serrations, and owing to the springs Lon the bolts E between the nuts G and the base of the sockets F, are held therein, whereby the desk is firmly secured in adjusted position and prevented from lowering or dropping, owing to the locking action of the teeth K on the standard A. The tendency of the said springs L is to keep at all times said teeth in engagement or interlocked with said corrugations.

M designates flanges on the adjacent sides of the standards A and legs 0, the same acting as guides for the legs 0 in the vertical motions thereof, and also preventing turning serrations W in the walls of the slots R, and

thuslock the back to the standards 1. In order to draw said teeth V into the corrugations or serrations W I employ springs X which bear against the base of the sockets U and the nuts T. When the back is adjusted as described, the teeth are held firmly in the corrugations, owing to said springs X, and thus the back retains its position.

In order to guide the back in its movements and to prevent said back from turning on the standards, I employ flanges Y on the adjacent faces of the back and standards, the same being placed side by side, as most clearly shown in Fig. 4, it being noticed that the standard and seat frame or sockets D have flanges Y for similar purposes.

The seat N is supported on the arms Z which are mounted on the blocks A, the latter being'connected with the standards P by means of bolts B, which pass through vertical slots 0 in the standards, and/through openings in the sockets D on the blocks A, whereby the seat may be vertically adjusted. On the heads of the bolts B are teeth E which are adapted to engage withserrations F, on the walls of the slots 0. Nuts G are fitted on the bolts B and enter the sockets D, whereby they are protected from rotation and. by means of the springs H on said bolts, the teeth are held securely in the serrations so that the seat is held in vertically adjusted position and prevented from lowering. The said springs H are interposed between the nuts G and the bases of the sockets D for primarily retaining the teeth E in, engagement with the serrations F.

In order to prevent the several bolts from turning, each of the same is provided with a tongue K, which freely enters the slot of the respective standard, and rises and lowers with the bolt.

The axes of the seat consist ot the sockets H on the arms J, the latter being secured to the beam A, the sockets R on the arms Z,

the conical socket pieceL" which enters said,

sockets H, R, and the bolt M which passes through said sockets and socket piece, by which provision the seat turns easily and noiselessly on the axes thereof.

Interposed between the socket pieces: L and the bases of the sockets H are springs Nfwhichhold the'parts of the axes sufficiently closetogether as friction joints, and prevent lost motions-and rattling of said partsi In Order to adjust the tension of either of the soe,4ee

formed with corrugations thereon, legs on said desk'having sockets on their inner faces and flanges on their sides fitting flanges on thesaid standards, bolts passing through openings in said sockets and provided with teeth fittingin said corrugations, nuts on said bolts in said sockets, and sprin gs on said bolts bearing on said nuts and on the base of a socket in which said not is non-rotatable,

said parts being combined substantially as described.

2, A standard with a slot having corrugations on the faces of its side walls, a leg with openings, a bolt passing through said openings and slot and provided with a tongue fitting in said slot, andteeth fitting in said corrugations, and a fastening nut on said bolt, said parts being combined substantially as described.

3. An adj ustable'desk,seatand back.,having slotted standards supporting the same, bolts connecting said desk, seatand back with said standards, serrations onsaid standards, teeth on said bolts engaging said serrations, and tongues on the bolts freely entering the-slots of the standardathe parts named being combined substantially as described.

Totheabove I have signed my name this 29th day of October, 1892. d p v v p JOSEPH HA-USS.

In presence 0f-"= PIT. WEILE'Y, FERD. BOPP. 

